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28 June, 20:47

5b2-10b-15 factor this

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  1. 28 June, 21:06
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    5 (b - 3) (b + 1)

    Step-by-step explanation:

    take out a common factor of 5

    = 5 (b² - 2b - 3)

    to factor the quadratic consider the factors of - 3 which sum to - 2

    These are - 3 and + 1, thus

    = 5 (b - 3) (b + 1)
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